ADT Monitored Door and Window Sensors | 833-930-0717
ADT Blue by 4pk Door and Window Sensor for Home Security WHITE BRP04SSH1R0-29 - Best Buy
Magnet Riser Compatible with ADT - Self Adhesive DIY Magnet Side Sensor Spacer for Home Security System, Sensor and Magnet are not Included (0.50 Inch): Amazon.co.uk: Business, Industry & Science